WO2010102503A1

WO2010102503A1 - Bearing method and control apparatus of multimedia broadcast multicast service

Info

Publication number: WO2010102503A1
Application number: PCT/CN2009/076002
Authority: WO
Inventors: 苟伟; 马子江; 艾建勋; 王斌
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-03-13
Filing date: 2009-12-24
Publication date: 2010-09-16
Also published as: CN101835096A; CN101835096B

Abstract

A bearing method and control apparatus of the multimedia broadcast multicast service (MBMS) are provided. It makes that there is only one primary multicast control channel (P-MCCH) in each cell with the non-boundary location in the overlapped areas of the multimedia broadcast multicast service single frequency network (MBSFN); the centralized placement of the MBMS control signalings is realized; it is convenient for the terminal to obtain the control information corresponding to all the MBMSs in the cell once time, and at the same time, the interference of the merged areas could be avoided by configuring the different multicast resources to the different merged areas.

Description

Hosting method and control device for multimedia broadcast multicast service

The present invention relates to an LTE (Long Term Evolution) system, and more particularly to a bearer method and a control device for MBMS (Multimedia Broadcast Multicast Service). Background technique

With the rapid development of the Internet and the popularity of large-screen multi-function mobile phones, there have been a large number of mobile data multimedia services and various high-bandwidth multimedia services, such as video conferencing, television broadcasting, video on demand, advertising, online education, interactive games, etc. This aspect meets the rising business needs of mobile users and brings new business growth points to mobile operators. These mobile data multimedia services require multiple users to receive the same data at the same time. Compared with general data services, they have the characteristics of large data volume, long duration, and delay sensitivity.

In order to effectively utilize mobile network resources, 3GPP (3rd Generation Partnership Project) proposed MBMS, which is a technology that transmits data from one data source to multiple targets, and implements the network (including The sharing of resources between the core network and the access network improves the utilization of network resources (especially air interface resources). MBMS defined by 3GPP can not only realize plain text low-rate message class multicast and broadcast, but also realize high-speed multimedia service broadcast and multicast, providing a variety of rich video, audio and multimedia services, which undoubtedly conforms to future mobile The trend of data development provides a better business prospect for the development of 3G.

In LTE, the data channel and the control channel of the MBMS may adopt a single cell transmission mode and a multi-cell transmission mode. The single cell transmission mode means that the data channel and the control channel of the MBMS are transmitted only in the local cell, and there is no MBSFN (Multimedia Broadcast multicast service Single) Frequency Network, multimedia broadcast multicast service single-frequency network) merges the macro diversity function, and multi-cell transmission mode means that multiple cells send the same data on the same time-frequency resource, that is, MBMS or control information is adopted. The way content is synchronized, that is, it is sent by MBSFN merge. In this multi-cell transmission mode, multiple cells transmit MBMS data or control signaling of the same content at the same time, which can improve the receiving gain of the UE (User Equipment). For a more detailed definition of the single/multi-cell mode, refer to the definition in the LTE protocol 36.300v870: The single-cell mode in the present invention is the single-cell transmission defined in section 15.3.2, and the multi-cell mode is 15.3. Multi-cell transmissi m as defined in Section 3.

In LTE, MBMS can be transmitted in a hybrid carrier mode. In the hybrid carrier mode, Unicast (unicast service) and MBMS are transmitted on the same carrier in a time division multiplexing manner. The minimum unit of time division multiplexing is a subframe. At present, the LTE tentative MBMS repetition period is 320ms, which corresponds to 32 radio frames in LTE. For an MBSFN area, the MBMS resource configuration method allocates a certain physical resource to carry the MBMS of the MBSFN area. As shown in Fig. 1, in one MBMS repetition period, one radio frame has a duration of 10 ms, and one radio frame contains 10 subframes, and one subframe has a duration of 1 ms. The shaded portion in the figure is the MBMS resource of an MBSFN area using the existing MBMS resource allocation scheme. The existing allocation scheme is divided into radio frame level allocation and subframe level allocation. The radio frame uses the MBMS radio frame period, the MBMS radio frame offset to describe the allocation scheme, and the subframe level uses the bitmap description to be allocated as MBMS radio. Those subframes are used to carry MBMS. And a repetition period is 32 radio frame durations, and the foregoing resource allocation method describes MBMS resource allocation in one cycle at a time.

For the area covered by the MBSFN overlap, as shown in Figure 2, the two MBSFN areas overlap. The physical resource allocation of the MBSFN A area is shown by the horizontal line in Figure 1. The physical resource allocation of the MBSFN B area is shown in Figure 1. With a vertical line shadow, then in the overlapping area (C area) shown in Figure 2, the physical resource used to carry MBMS is MBSFN A. The sum of the resources of the area and the MBSFN B area, note that in the overlapping area, the physical resources from the two MBSFN areas are divided in units of subframes without interference between each other. It can be seen that there are 4 MBMS radio frames in the MBSFN A area in one repetition period, and each MBMS radio frame contains 3 MBMS subframes. There are also 8 MBMS radio frames in the MBSFN B area in one repetition period, and each MBMS radio frame contains 2 MBMS subframes.

The MBMS data is mapped to the MTCH (MBMS Traffic Channel) in the logical channel, that is, the MTCH channel is used to carry the actual MBMS data, and the MTCH in the multi-cell mode is mapped to the MCH in the transport channel (Multicast Channel, multicast). On the channel, the MCH is finally mapped to the physical multicast channel PMCH (Physical Multicast CHannel) for transmission.

The physical resources used by each MBSFN area to transmit MBMS constitute a physical channel called PMCH, and the physical multicast channel PMCH is used to carry the transport channel MCH.

The following describes the structure of the MCCH (Multicast Control Channel) in LTE. The MCCH is one of the main control channels for carrying MBMS service control signaling. In LTE R8, the MCCH design can be divided into P-MCCH (Primary Multicast Control Channel), which is used to carry P-MCCH, and Secondary MCCH (S-MCCH), which is used to carry S-MCCH. Further, in LTE, scheduling information indicating one or two P-MCCHs on a BCCH (Broadcast Control Channel) is specified (the P-MCCH in the single cell mode is transmitted on the downlink shared channel DL-SCH, and the P-MCCH in the multi-cell mode is more Broadcast channel MCH transmission).

In the prior art, the MBSFN area may not overlap, and overlapping coverage may also occur. Each MBSFN area has its own logical control channel and logical transmission channel. How should these logical channels be configured on the transmission channel, and how should the transmission channel be mapped to the physical channel? In particular, when overlapping coverage of MBSFN occurs, how should the logical control channel and logical transmission channel in the overlapping coverage area be configured and how to map, and no solution is given in the prior art. Summary of the invention

The technical problem to be solved by the present invention is to provide a bearer method and a control device for a multimedia broadcast multicast service, which is convenient for a terminal in an overlapping area to know related control information of all MBMSs in the cell at a time.

In order to solve the above technical problem, the technical solution of the present invention is implemented as follows:

A 7-load method of MBMS, the method comprising:

Configuring a multi-cell mode P-MCCH for each cell in a non-boundary location in the same MBSFN overlap region, and allocating the same multicast resource for the P-MCCH of each cell; the cells forming the P-MCCH The scope of the merger or part of the scope of the merger;

The primary multicast control signaling of all MBMSs of each cell in each cell is carried on the P-MCCH of the multi-cell mode of the cell.

For the case where different MBSFN overlapping areas are adjacent or the MBSFN overlapping area is adjacent to the MBSFN non-overlapping area, the method further includes:

A P-MCCH in a single cell mode is configured for each cell at a boundary position on one or both sides of the boundary of the MBSFN overlap region, and the primary multicast control signaling of each cell in each cell is from the corresponding local cell. P-MCCH bearer in single cell mode;

Except for the cell in which the P-MCCH in the single cell mode is configured, each MBSFN overlap region and other cells in the MBSFN non-overlapping region respectively constitute a combined range of P-MCCHs of the multi-cell mode configured in the respective regions.

The method further includes:

Configuring a multi-cell mode S-MCCH for each cell in the merging range of the P-MCCH in the same multi-cell mode, on the multicast channel MCH to which the P-MCCH is mapped, or the S - a multicast control signal carrying all MBMSs of each cell on a multicast channel corresponding to the multicast resource allocated by the MCCH;

The combined range of the S-MCCH is the same as the combined range of the P-MCCH. The method further includes:

Configuring a multi-cell mode S-MCCH for each cell in the same MBSFN area, corresponding to multiple multicast resources allocated to the S-MCCH on the multicast channel to which the MTCH is mapped. On the broadcast channel, carrying sub-multicast control signaling of all MBMSs of each cell;

The combining range of the S-MCCH is the MBSFN area.

The method further includes:

Each cell in the same MBSFN area carries MBMS service data on one or more multicast transmission channels;

The plurality of multicast transmission channels are mapped onto the same multicast channel or separately mapped to different multicast channels.

A method for carrying a multimedia broadcast multicast service, the method comprising:

Configuring a multi-cell mode MCCH for each cell in a non-boundary location in the same MBSFN overlapping area, and allocating the same multicast resource to the MCCH of the each cell; the each cell constituting the MCCH merging range or the merging Part of the scope;

The multicast control signaling of all MBMSs of each cell in each cell is carried on the MCCH of the multi-cell mode of the current cell.

For the case where an MBSFN area includes an MBSFN overlap area and a MBSFN non-overlapping area, the method further includes:

Configuring a single cell mode MCCH for each cell in the MBSFN overlap region and/or the MBSFN non-overlapping region; the multicast control signaling of each cell in the cell is determined by the corresponding local cell MCCH bearer in cell mode;

In addition to the cell in which the MCCH of the single cell mode is configured, other cells of the MBSFN overlap region constitute a merged range of MCCH in one multi-cell mode, and other cells in the non-overlapping region of the MBSFN constitute another multi-cell mode. The scope of MCCH consolidation. A method for carrying an MBMS service channel, the method comprising:

For the MBSFN area participating in the multi-cell mode transmission, the MCCH of the cell of the MBMS is allocated the same multicast resource, and the MCCH signaling is transmitted on the multicast channel MCH corresponding to the multicast resource.

When the MCCH and the MTCH are mapped to the multicast channel MCH for multi-cell mode transmission, the MCCH and the MTCH are multiplexed on the same multicast channel MCH.

MCCH and MTCH have the same coverage and are transmitted in multi-cell mode. Some or all of the sub-frames.

The MCCH and MTCH have the same MBSFN merge range.

The MBSFN scope is:

When the MCCH of the border cell of the MBSFN area is transmitted in the same multi-cell mode as the MCCH of the non-boundary cell, the MBSFN combining range is the entire MBSFN area including the border cell of the MBSFN area; When the cell mode is transmitted, and the MCCH of the non-boundary cell is transmitted in the multi-cell mode, the MBSFN combining range is an area composed of non-boundary cells in the MBSFN area.

The MCH is composed of a subframe specified by an MCH subframe allocation pattern.

The MTCH is one or more.

The MBMS control device is an MCE.

A multimedia broadcast multicast service control apparatus includes a multicast control channel allocation module, a multicast resource allocation module, and a multicast control signaling bearer module;

The multicast control channel allocation module is configured to respectively configure a P-MCCH in a multi-cell mode for each cell in a non-boundary location in the same MBSFN overlap region;

The multicast resource allocation module is configured to allocate the same multicast resource to the P-MCCH of each cell, so that each cell constitutes a merge range of the P-MCCH or a part of the merge range The multicast control signaling bearer module is configured to use all the cells in each cell

The primary multicast control signaling of the MBMS is carried on the P-MCCH of the corresponding multi-cell mode of the own cell.

The multicast control channel allocation module is further configured to: when neighboring different MBSFN overlapping areas or adjacent to the MBSFN overlapping area i or adjacent to the MBSFN non-overlapping area, to each of the cells at the boundary position on one side or both sides of the boundary, Configure a P-MCCH in a single cell mode.

The multicast control signaling bearer module is further configured to carry the primary multicast control signaling of each cell in each cell in a P-MCCH of a corresponding single cell mode of the current cell.

The multicast control channel allocation module is further configured to configure a multi-cell mode S-MCCH for each cell in the merging range of the P-MCCH in the same multi-cell mode;

The multicast control signaling bearer module is further configured to carry a corresponding bearer on a multicast channel corresponding to the multicast resource to which the P-MCCH is mapped or separately allocated to the S-MCCH Sub-multicast control signaling for all MBMSs in each cell.

The multicast control channel allocation module is further configured to allocate the same multicast resource to the MCCH of each cell for the MBSFN area;

The multicast control signaling bearer module is further configured to uniformly map the signaling carried in the MBSFN area to the MCCH to the MCH corresponding to the multicast resource, and apply the MCH unified bearer MTCH. And the MCCH.

The multicast control channel allocation module is configured to multiplex the MCCH and the MTCH on the same multicast channel MCH when the MCCH and the MTCH are mapped to the multicast channel MCH for multi-cell mode transmission;

The multicast resource allocation module is configured to allocate the same multicast resource to the MCCH of the cell in which the MBSFN area participates in the multi-cell mode transmission MBMS; The multicast control signaling bearer module is configured to: a multicast channel corresponding to the multicast resource

MCCH signaling is sent on the MCH.

MCCH and MTCH have the same coverage and are transmitted in multi-cell mode. The bearer method and the control device of the present invention enable only one P-MCCH in each cell in the non-boundary position in the overlapping area of the MBSFN, and realize centralized placement of MBMS control signaling, so that the terminal can know all the relevant control of the MBMS in the cell at one time. Information, and the different multicast resources are configured in different merging areas. The interference of the merging area can be avoided. For example, the MCH Subframe Allocation Pattern (MCH Subframe Allocation Pattern) is allocated. Multiple logical channels transmitted in the multi-cell mode with the same coverage requirement are multiplexed on the same multicast channel, which can reduce the signaling overhead, the number of fewer multicast channels, and the ease of scheduling. DRAWINGS

1 is a schematic diagram of physical resource allocation in an MBSFN area;

2 is a schematic diagram of overlapping coverage of two MBSFN areas;

Figure 3 is a schematic diagram of overlapping coverage of three MBSFN areas.

4 is a flow chart of a mapping method of P-MCCH in the embodiment. detailed description

Herein, the MBSFN overlap area refers to an area covered by two or more MBSFN areas, and the same MBSFN overlap area means that each cell in the area is covered by the same MBSFN area group, and the MBSFN area group consists of two Or more MBSFN areas constitute. As shown in FIG. 3, when three MBSFN areas i of MBSFN1, MBSFN2, and MBSFN3 are overlapped, the cells in the M1 area are all under the overlapping coverage of the MBSFN area group consisting of MBSFN1 and MBSFN2; the cells in the P1 area are both Under the overlapping coverage of the MBSFN area group consisting of MBSFN1, MBSFN2, and MBSFN3, the M1 area and the PI area are different overlapping areas. Ben The non-overlapping area referred to herein refers to an area covered by only one MBSFN area.

Herein, the border cell refers to a cell at a boundary position of a different MBSFN overlap region, or a cell at a boundary position of an MBSFN overlap region and an MBSFN non-overlapping region, that is, the cell is adjacent to a cell of another region.

In addition, it is well known in the art that the actual controller of the cell in the mobile communication technology is called a base station. Currently, one base station can control multiple cells (the cells here are referred to as sectors in some documents), or only Control a cell. This document is described in units of cells. If the execution of the cell is involved, it is completed by the base station controlling the cell.

The embodiment will be described hereinafter with the case where the overlapping coverage of the two MB SFN areas shown in Fig. 2 occurs.

In FIG. 2, the MBSFN A area and the MBSFN B area overlap, and in the MBSFN A area, a plurality of cells form an actual MBSFN A area, and a plurality of cells in the MBSFN B area constitute an actual MBSFN B area. In the area where MBSFN A and MBSFN B overlap, there are also many cells belonging to two MBSFN A and MBSFN B areas at the same time. In this document, the MBSFN A area is referred to as the A area, the MBSFN B area is referred to as the B area, the area where the MBSFN A area does not overlap is referred to as the A1 area, and the area where the MBSFN B area does not overlap is referred to as the B1 area. The area where the MBSFN A area and the MBSFN B area overlap is referred to as a C area. Assume that the MB SFN A area has two MBMSs of TV 1 and TV2, and the MBSFN B area has two MBMSs of TV3 and TV4. In the C area, there are 4 MBMSs of TV1, TV2, TV3 and TV4.

Each MBSFN area has MBMS. The MBMS data is composed of control data and service data, that is, each MBSFN area has MBMS control data and service data. The MBMS data is mapped to the MTCH, and the MTCH is called the MBMS transport channel.

The following article defines the relationship between MTCH, MCH and MSAP: MCH is a transport channel, which is characterized by point-to-multipoint transmission. The corresponding physical resources are allocated by the system for transmission MBMS. The multicast resources, in the LTE/LTE-A system, have their own multicast resources for each MBSFN area, and the multicast resources of each MBSFN are independent, and are time-divided in units of subframes. The multicast resources of each MBSFN area can be divided into multiple groups according to a certain pattern in units of subframes, each group can constitute one MCH, or multiple groups form one MCH, then the pattern used in each MCH is composed. MSAP called MCH, an MSAP describes the physical resources of an MCH channel. Assigning different MSAPs is actually allocating different multicast resources to generate different MCH channels (the MCH channel is determined by MSAP, and an MBSFN area can have at least One MCH). MTCH is a logical channel. One MTCH carries data of one or more services (for example, a TV program is called a service). One service is carried only in one MTCH, MTCH is mapped to MCH for transmission, and one or more MTCHs can be mapped. Go to an MCH.

The MBMS control device is responsible for processing P-MCCH in multi-cell mode, MTCH in multi-cell mode, and S-MCCH configuration in multi-cell mode, resource allocation and transmission, and the like. The MBMS control device may exist in a base station, a gateway, or other physical entity on the network side.

The MBMS control device is a control plane entity, for example: MCE (Multi-cell/multicast Coordination Entity).

The processing of the MBSFN area overlap coverage is described below.

The bearer method of the P-MCCH includes the following contents:

In the C area: as shown in FIG. 4, the MBMS control apparatus configures a P-MCCH in a multi-cell mode for each cell in the C-area non-boundary position, and allocates the same multicast resource to the P-MCCH of each cell. The P-MCCH signaling of all the MBMSs of each cell is carried on the multi-cell mode P-MCCH of the local cell, and then mapped to the MCH corresponding to the multicast resource. Corresponding to FIG. 2, the multi-cell mode P-MCCH of each cell in the non-boundary position of the C region carries the main control signaling of TV1, TV2, TV3, and TV4 of the current cell, and the MBSFN merge range of the P-MCCH is the C area. All cells in non-boundary locations. Al area: The MBMS control device configures one P-MCCH for each cell in the non-boundary position of the Al area, and allocates the same multicast resource to the P-MCCH of each cell, and P-MCCH signaling of all MBMSs of each cell It is carried on the multi-cell mode P-MCCH of the local cell, and is mapped to the MCH corresponding to the multicast resource. Referring to FIG. 2, the main control signaling of TV1 and TV2 of the local cell is carried in the multi-cell mode P-MCCH of each cell of the A1 area. The MBSFN of this P-MCCH is merged into cells of all non-boundary locations in the A1 region.

In the B1 area, the MBMS control device configures a multi-cell mode P-MCCH for each cell in the non-boundary position of the B1 area, and allocates the same multicast resource to the P-MCCH of each cell, and all the MBMS Ps of each cell The MCCH signaling is carried on the multi-cell mode P-MCCH of the local cell, and is mapped to the MCH corresponding to the multicast resource. Referring to Figure 2, the multi-cell mode of the B1 area carries the relevant control signaling of TV3 and TV4 in the B1 area in the P-MCCH. The MBSFN of this P-MCCH is merged into cells of all non-boundary locations in the B1 area.

The A1 area is adjacent to the C area and has a boundary. The cell at the boundary location may be the same as the method for carrying the P-MCCH in the non-boundary location cell of the respective region, and the merging range of the P-MCCH is the entire region of the respective region, that is, the P-MCCH in the A1 region is merged into the entire A1 region. The P-MCCH in the C area is merged into the entire C area. In another case, since the cell at the boundary location and the cell in the adjacent region belong to different regions, each of the P-MCCHs of the multi-cell mode is configured, and has a respective merge range, and the P-MCCH message sent by the two is also The order is different, so the cell boundary will generate strong interference. The same is true for the area adjacent to the B1 area and the C area. Therefore, in this embodiment, a P-MCCH in a single-cell mode is configured for each cell at a boundary location on one side (or both sides), and the primary multicast control of each cell in each cell at the boundary is performed. The signaling is carried on the P-MCCH of the single cell mode of the current cell.

In the C area where the MBSFN overlaps, there is only one multi-cell mode P-MCCH, which is convenient for the terminal to know all the MBMS related information of the cell at one time.

The carrying method of the MTCH data includes: The MTCH is used to carry MBMS data instead of control signaling, and one MBSFN area has at least one MTCH logical channel.

The MBMS control device configures more than one multi-cell mode MTCH for each cell in the A-area non-boundary location, and allocates the same multicast resource to the MTCH of each cell, where different MTCHs allocate different multicast resources, The same MBMS of each cell is mapped to the respective MTCHs, and then mapped to the multicast channel MCH corresponding to each multicast resource. For example, the MBMS control device maps TV1 and TV2 to two MTCHs for each cell in the A-area non-boundary position (may assume that TV1 maps to MTCH1, TV2 maps to MTCH2), and configures MTCH1 and MTCH2 respectively. The broadcast resources are respectively mapped to the multicast channels MCH1 and MCH2, and finally the logical channel MTCH1 of the data mapping of the TV1 service is remapped to the corresponding MCH1 bearer, and the logical channel MTCH2 of the data mapping of the TV2 service is remapped to the corresponding MCH2. Hosted. The MSF1 and MTCH2 MBSFN merging ranges are all A areas, or the MBSFN merging ranges of MCH1 and MCH2 respectively carrying the MTCH1 and MTCH2 are all cells in the non-boundary position in the A area.

The MBMS control device configures a multi-cell mode MTCH for each cell in the A-area non-boundary position, and allocates the same multicast resource to the MTCH of each cell, and maps the same MBMS of each cell to the respective MTCH. It is mapped to the multicast channel MCH corresponding to each multicast resource. For example, corresponding to FIG. 2, the MBMS control apparatus determines to map TV1 and TV2 to one MTCH for each cell of the A area, and configures an MCH for the MTCH, and finally implements re-mapping the logical channel MTCH that carries the data mapping of the TV1 and TV2 services to Hosted on the corresponding MCH. The MBSFN of the MTCH is merged into the A area, or the MBSFN of the MCH carrying the MTCH is merged into all non-boundary locations in the A area.

The MBMS control device may also allocate a plurality of MTCHs and the P-MCCHs in the non-boundary locations of the A-area as a whole, and allocate the shared multicast resources through the MSAP, and further multiplex the bearers on the MCH corresponding to the multicast resources. MTCH data and P-MCCH, this In the case, the MBSFN merges only the size of the area formed by the cells in the non-boundary position of the A area. When the cell MTCH, the P-MCCH, and the non-boundary location cell of the boundary location carry the MTCH and the P-MCCH in the same manner, at this time, the range in which the P-MCCH and the MTCH merge the MB SFN is the same, which is the size of the entire A area, then, The MBMS control device 4 performs the above-mentioned multiple MTCHs and P-MCCHs as a whole, and allocates the shared multicast resources through the MSAP, and carries the multiple MTCHs and P-MCCHs by further multiplexing on the MCH corresponding to the multicast resources. This can reduce the provision of independent MCH channels for the P-MCCH, which can reduce the overhead of MSAP signaling.

The processing in the B area is the same as that in the A area. The multi-cell mode MTCH in the non-boundary position of the B area carries the MBMS data of the TV3 and TV4 in the non-boundary position of the B area. The MBSFN range of the MTCH data is all in the B area. The non-boundary location of the cell; or the multi-cell mode MTCH1 of the B-area non-boundary location carries the TV3 service, the multi-cell mode MTCH2 carries the TV4 service, and the MBSFN combining range of the MTCH1 and the MTCH2 are all the cells of the non-boundary location in the B-area.

When the S-MCCH is included in the MBMS control information, the S-MCCH bearer method includes the following two methods. However, in practical applications, only one of the methods can be adopted.

For the first method, reference may be made to the above method for the P-MCCH. The MBMS control device configures a multi-cell mode S-MCCH for each cell of the C-region non-boundary location, and allocates the same multicast resource for the S-MCCH of each cell, and all the MBMS S-MCCH signaling of each cell. It is carried on the multi-cell mode S-MCCH of the local cell, and is mapped to the MCH corresponding to the multicast resource. The S-MCCH processing mode of each cell of the S-MCCH and the B1 area non-boundary position of each cell in the non-boundary position of the A1 area is the same as that of the C-area S-MCCH. The combined range of the S-MCCH is the non-boundary position of the C area, the non-boundary position of the A1 area, and the non-boundary position of the B1 area. The same as the combined range of the P-MCCH, the non-boundary position of the C area, the non-boundary position of the A1 area, and the B1 area. The S-MCCH of the non-boundary location may be merged with the P-MCCH in the same area, and the multicast channel MCH corresponding to the same multicast resource (eg, P-MCCH) Hosted on the multicast channel). The S-MCCH of the cell at the boundary location of each area may be in the same manner as the P-MCCH process of the border location cell, that is, the S-MCCH of the cell at the boundary location may be independently transmitted in a single cell mode, or may be used in both The S-MCCH processing of the border location cell is the same.

In the second mode, the MBMS control device configures one S-MCCH for each cell in the non-boundary position of the A area, and allocates the same multicast resource to the S-MCCH of each cell, and the S-MCCH signaling bearer of all the MBMSs of each cell. On the multi-cell mode S-MCCH of the local cell, it is mapped to the MCH corresponding to the multicast resource. The S-MCCH processing method is the same for each cell of the S-MCCH of the non-boundary location in the A-area and the non-boundary location of the B-area. The combined range of the S-MCCH is the non-boundary position of the A area and the non-boundary position of the B area, respectively, and the merged range of the MTCH is the same, then the non-boundary position of the A area and the non-boundary position of the B area S-MCCH can be merged with the MTCH in the same area. Together, they are carried on a multicast channel MCH corresponding to the same multicast resource (eg, a MTCH multicast channel). The processing of the S-MCCH of the cell at the boundary location of the A area and the B area may be performed in a single cell mode, or may be performed in the same manner as the non-boundary position. When the S-MCCH processing mode of the cell at the boundary location of the A area and the B area is the same as the S-MCCH processing mode of the non-boundary location cell, the S-MCCH combining range of the A area and the B area is the entire A area and B area size.

The following describes the case where the MBSFN areas are not overlapped.

If the area A and the area B do not overlap, the PMSC of the A area is taken as an example. The MBMS control device determines one P-MCCH for each cell in the area, and assigns the same to the P-MCCH of each cell. The multicast resource, the P-MCCH signaling of all the MBMSs of each cell is carried on the multi-cell mode P-MCCH of the local cell, and then mapped to the MCH where the multicast resource is located. The MBSFN merge range of the P-MCCH is the entire A area. The MTCH and S-MCCH are processed in the same way as the P-MCCH in the A area, and the MBSFN merged area is the entire A area. Processing of P-MCCH, MTCH and S-MCCH in Area B and in Area A The processing in the domain is the same, and the merged area is the entire B area. Because the combination range of P-MCCH, MTCH and S-MCCH is the same, P-MCCH, MTCH and S-MCCH can be carried on the multicast channel MCH corresponding to the same multicast resource; one of the three channels can also be used. Or two bearers on the multicast channel MCH where the same multicast resource is located. For example, in the A area, since the P-MCCH and the MTCH have the same MBSFN combining range (it is also understood to have the same coverage and perform multi-cell mode transmission), the P-MCCH and one or more MTCHs are multiplexed in the same On the MCH, this can reduce the provision of independent MCH channels for the P-MCCH, which can reduce the overhead of MSAP signaling. If the amount of information of the P-MCCH is large (for example, often more than the data amount of 3 subframes), the P-MCCH can also provide an independent MCH, which can reduce the scheduling complexity. In the B area, the same processing can be employed. In summary, for a plurality of multi-cell mode channels having the same MBSFN combining range (which can also be understood to have the same coverage and performing multi-cell mode transmission), the above channels can be used to multiplex multiple multi-cell mode channels to the same On the MCH, perform point-to-multipoint mode transmission. In addition, the MTCH can be allocated as a whole, and multicast resources are allocated to the multicast channel, and the MTCH is carried on the multicast channel corresponding to the multicast resource. Multiple MTCHs can also be set, and the multicast resources are respectively allocated, and the multicast resources are correspondingly allocated. The broadcast channel uploads the corresponding MTCH.

When the MCCH channel is not classified into the primary and secondary structures, the MCCH signaling is generally referred to as multicast control signaling, and includes the control information of the P-MCCH and the S-MCCH, which is the MBSFN overlapping area of the same multimedia broadcast multicast service single frequency network. Each cell in the inner non-boundary position is configured with a multi-cell mode multicast control channel MCCH, and allocates the same multicast resource to the MCCH of each cell, where each cell constitutes a merge range or a merge range of the MCCH. The multicast control signaling of all multimedia broadcast multicast services, that is, the MBMS of each cell in each cell, is carried in the MCCH of the multi-cell mode of the local cell. The non-overlapping MBSFN area, or the overlapping coverage of the MBSFN area for the MCCH bearer, may completely adopt the above P-MCCH processing method. The above "merging" refers to MBSFN merging.

a multimedia broadcast multicast service control apparatus, including a multicast control channel allocation module, a multicast resource allocation module, and a multicast control signaling bearer module;

The multicast control channel allocation module is configured to configure a multi-cell mode primary multicast control channel P-MCCH for each cell in the non-boundary location in the MBSFN overlapping area of the same multimedia broadcast multicast service single frequency network; When different MBSFN overlapping areas are adjacent or the MBSFN overlapping area is adjacent to the MB SFN non-overlapping area, a single-cell mode P is respectively allocated to each of the cells at the boundary position on the boundary side or both sides of the MB SFN overlapping area. -MCCH; is further configured to configure a multi-cell mode sub-multicast control channel S-MCCH for each cell in the combined range of P-MCCHs in the same multi-cell mode;

The multicast resource allocation module is configured to allocate the same multicast resource to the P-MCCH of each cell, so that each cell constitutes a merging range of the P-MCCH or a part of the merging range;

The multicast control signaling bearer module is configured to carry all the multimedia broadcast multicast services of each cell in each cell, that is, the primary multicast control signaling of the MBMS, on the P-MCCH of the multi-cell mode of the local cell. And is further configured to carry the primary multicast control signaling of each cell in the cell in a P-MCCH of the single cell mode of the current cell; and to be used in the multicast channel mapped to the P-MCCH. The secondary multicast control signaling of all MBMSs of each cell is carried on the multicast channel corresponding to the multicast resource allocated separately for the S-MCCH.

With this method, only one P-MCCH can be implemented in each cell in the overlap region of the MBSFN, and the centralized placement of the MBMS notification messages can be realized, so that the terminal can know all the MBMS related information of the cell at one time. P-MCCH and MTCH have different merged areas, and by independently configuring different multicast resources, interference in the merged area can be well avoided.

Claims

Claim

A method for carrying an MBMS, the method comprising:

2. The bearer method according to claim 1, wherein the method further comprises: for different MBSFN overlapping area adjacent or MBSFN overlapping area adjacent to the MBSFN non-overlapping area, the method further comprises:

The method according to claim 1 or 2, wherein the method further comprises:

The combining range of the S-MCCH is the same as the combining range of the P-MCCH.

The method according to claim 1 or 2, wherein the method further comprises: Configuring a multi-cell mode S-MCCH for each cell in the same MBSFN area, corresponding to multiple multicast resources allocated to the S-MCCH on the multicast channel to which the MTCH is mapped. On the broadcast channel, carrying sub-multicast control signaling of all MBMSs of each cell;

The combining range of the S-MCCH is the MBSFN area.

The method according to claim 1 or 2, wherein the method further comprises:

A method for carrying a multimedia broadcast multicast service, the method comprising: configuring a multi-cell mode MCCH for each cell in a non-boundary location in the same MBSFN overlap region, and is the MCCH of each cell Allocating the same multicast resource; the cells constitute a merged range of the MCCH or a part of the merged range;

The bearer method according to claim 6, wherein, for the case where an MBSFN area includes an MBSFN overlap area and an MBSFN non-overlapping area, the method further includes: being the MBSFN overlap area and/or the MBSFN non-overlapping area Each cell in the boundary location is configured with a single cell mode MCCH; the multicast control signaling of each cell in the cell is carried by the MCCH of the corresponding cell in the single cell mode;

In addition to the cell in which the MCCH of the single cell mode is configured, other cells of the MBSFN overlap region constitute a merged range of MCCH in one multi-cell mode, and other cells in the non-overlapping region of the MBSFN constitute another multi-cell mode. The scope of MCCH consolidation.

A method for carrying an MBMS service channel, the method comprising: allocating the same multicast resource to an MCCH of a cell in which an MBSFN area participates in a multi-cell mode transmission MBMS, and a multicast channel corresponding to the multicast resource MCCH signaling is sent on the MCH.

9. The bearer method according to claim 8, wherein the MCCH and the MTCH have the same coverage and are all transmitted in a multi-cell mode.

The bearer method according to claim 8, wherein the multicast resource is part or all of the subframes allocated in the MBSFN area for transmitting the MBMS.

The bearer method according to claim 8 or 10, wherein the MCCH and the MTCH have the same MBSFN combining range.

12. The bearer method according to claim 11, wherein the MBSFN merge range is:

The bearer method according to claim 8, wherein the MCH is composed of a subframe specified by an MCH subframe allocation pattern.

The bearer method according to claim 8, wherein the MTCH is one or more.

The bearer method according to claim 8, wherein the MBMS control device is an MCE.

16. A multimedia broadcast multicast service control apparatus, comprising: multicast control a channel allocation module, a multicast resource allocation module, and a multicast control signaling bearer module. The multicast control channel allocation module is configured to configure a multi-cell mode P- for each cell in a non-boundary location in the same MBSFN overlap region. MCCH;

The multicast resource allocation module is configured to allocate the same multicast resource to the P-MCCH of each cell, so that each cell constitutes a merge range of the P-MCCH or a part of the merge range;

The multicast control signaling bearer module is configured to carry the primary multicast control signaling of all MBMSs of each cell in each cell in the P-MCCH of the corresponding multi-cell mode of the current cell.

17. The control device of claim 15 wherein:

18. The control device of claim 15 wherein:

The multicast control channel allocation module is further configured to configure a multi-cell mode S-MCCH for each cell in the merging range of the P-MCCH in the same multi-cell mode; the multicast control signaling bearer The module is further configured to carry a secondary multicast of all MBMSs of each corresponding cell on a multicast channel corresponding to the multicast resource to which the P-MCCH is mapped or separately allocated for the S-MCCH Control signaling.

19. The control device of claim 16 wherein:

The multicast control signaling bearer module is further configured to: use the MBSFN for each cell The signaling carried on the MCCH in the area is uniformly mapped to the MCH corresponding to the multicast resource, and the MCH is used to uniformly carry the MTCH and the MCCH.

A multimedia broadcast multicast service control apparatus, comprising: a multicast control channel allocation module, a multicast resource allocation module, and a multicast control signaling bearer module;

The multicast resource allocation module is configured to allocate the same multicast resource to the MCCH of the cell in which the MBSFN area participates in the multi-cell mode transmission MBMS;

The multicast control signaling bearer module is configured to send MCCH signaling on a multicast channel MCH corresponding to the multicast resource.

21. The control apparatus according to claim 20, wherein the MCCH and the MTCH have the same coverage and are all transmitted in a multi-cell mode.